Chromate

The chromium atoms are in oxidation state +6 in both, and the chromate and dichromate ions are fairly strong oxidizing agents. Chromium in the +6 (or VI) oxidation state is often referred to as hexavalent chromium.

Barium Chromate

Barium chromate (or barium chromate oxide or chromic acid barium) is a fine light yellow powder with the formula BaCrO4. It is very insoluble in water, but is soluble in acids: 2 BaCrO4 + 2 H+ 2 Ba2+ + Cr2O72- + H2O It is used in some pyrotechnic compositions, especially delay compositions, as an oxidizer.

Copper Chromate

We are currently having the exterior of some copper coils finished with luster-on cobra c conversion coating to prevent cosmetic discoloration during humidity exposure. Does anyone know of any military/commercial/industrial specifications - along the lines of astm b912 or mil-c-5541 - that could be called out on our part drawings to specify this finish